What is CVE-2026-6718?

CVE-2026-6718 is a medium-severity vulnerability in IBM Concert, classified under Incorrect Default Permissions. CVSS score: 6.2/10. Published 2026-09-23.

How severe is CVE-2026-6718?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in IBM Concert

CVE-2026-6718

IBM Concert 1.0.0 through 3.0.0 is vulnerable to improper access control which allows unauthorized modification of application files.

Published 2026-09-23 · last modified 2026-09-28.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (4.3th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

IBM Concert

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.ibm.com/support/pages/node/7288830 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-6718?: CVE-2026-6718 is a medium-severity vulnerability in IBM Concert, classified under Incorrect Default Permissions. CVSS score: 6.2/10. Published 2026-09-23.
How severe is CVE-2026-6718?: Medium severity. CVSS v3 base score is 6.2 out of 10.